Economists and other policy types are working hard to maintain the absurdity that the housing bubble was hard to see. Hence we have Federal Reserve Board Governor Jeremy Stein pontificating on how the Fed should deal with bubbles and the Post playing along with the gag.

Let's just run through the basic facts. Nationwide house prices had sharply departed from a 100 year long trend in which they had just kept pace with the overall rate of inflation. At the peak of the bubble in 2006 they were more than 70 percent above their trend level. Housing construction rose from its average of 3-4 percent of GDP to over 6.0 percent of GDP. This was at a point when the demographics would have led observers to expect a drop in construction since the baby boom cohort was seeing their kids move away from home and would have been looking to downsize. On top of this, the vacancy rate was already at record levels as early as 2002. It kept rising to new record highs year by year after that.

The savings rate had dropped from a pre-stock bubble average of more than 8.0 percent to near zero at the peak of the bubble. Again, the demographics with the baby boom cohort in its peak saving years would have led one to expect a rise in the savings rate.

Any economist who could look at these monstrous divergences from normality and not recognize a bubble really needs a new line of work. And this is before we even talk about the explosion of the subprime market, the Alt-A market, and the huge number of homeowners buying houses with no money down.

Folks this was really really easy. The economists and other policy types who are trying to say it was difficult to see are just covering their rears.